<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>404 页面</title>
</head>
<body>
<div style="width: 100%; height: 100%; text-align: center; vertical-align: center">
    <h1>404 Error</h1>
    <h2>页面跑丢了！</h2>
</div>
</body>
</html>